Okay let's set this up as an equation

x + y = 57

y - x = 15

Let's solve this by substitution.

Change y - x = 15 to y = 15 + x.

x + (15 + x) = 57

x + 15 + x = 57

2x + 15 = 57

2x = 42

x = 21

Okay so the first number is 21, let's plug that into the first equation.

x + y = 57

21 + y = 57

y = 57 - 21

y = 36

the two numbers are 21 & 36 :)

The **solution **to **inequality **is **less **than the **negative **of 21. Then the **correct **option is **C**.

<h3>What is inequality?</h3>

**Inequality **is defined as an equation that **does **not contain an **equal **sign. Inequality is a term that describes a **statement's **relative **size **and can be used to **compare **these **two claims**.

The **inequality **is given below.

−(1/3)x + 10 > 17

Then the **solution **to the **inequality **will be

−(1/3)x + 10 > 17

−(1/3)x > 17− 10

−(1/3)x > 7

When the **sign **is **changed **then the **equality **sign also **changed**.

(1/3)x < −7

x < − 21

The **value **of x is **less **than the **negative **of 21.

Thus, the **correct **option is **C**.

More about the **inequality **link is given below.

brainly.com/question/19491153

#SPJ1

**Answer:**

10 rows with 6 passengers per row

**Step-by-step explanation:**

Let x be the number of rows and y the number of passengers per row.

Then we can interpret the story as the following two equations:

xy=60

(x+2)(y-1)=60

Solving these two equations:

y=60/x

(x+2)(60/x-1)=60 (substitute y)

60 - x + 120/x - 2 = 60 (multiply by -x)

x² + 2x - 120 = 0 (factor)

(x-10)(x+12) = 0

x = 10

y = 60/10 = 6

and indeed 10 * 6 = 60 and also 12 * 5 = 60

**Answer:**

the answer is 10.8 feet because I said so on foenem

**Answer:**

16

**Step-by-step explanation:**